import 'package:flutter/foundation.dart';class GCFunctionModel{  String? functionName;  String? functionIcon;  Key? key;  GCFunctionModel({this.key, required this.functionIcon,required this.functionName});  GCFunctionModel.fromJson(Map<String, dynamic> json) {    functionName = json['functionName'];    functionIcon = json['functionIcon'];    key = json['key'];  }  Map<String, dynamic> toJson() {    final Map<String, dynamic> data = new Map<String, dynamic>();    data['functionName'] = this.functionName;    data['functionIcon'] = this.functionIcon;    data['key'] = this.key;    return data;  }}